Well, I am thinking off it as 'over-inking', tough that not be the correct technical description when printing in typography.

The top single stamp in your OP seems to me to not only have the yellow colors misaligned (with the white lines it was supposed to fill), it also appears to have much more of the yellow ink than the others, so much it seems to 'float' and give a 'wet', bolder and less defined pattern. Similarly the bottom single in the OP seems to have more brown ink than the others, so the letters in 'Republique' get blurred/undefined and the top loop of the 'B' appears to be almost filled with ink, unlike the 'B' in the other 3 stamps.

The opposite effect - too little ink - seems to be the case for the blue parts on the top single stamp in the OP.

Disclaimer: While a tremendous amount of effort goes into ensuring the accuracy of the information contained in this site, Stamp Community assumes no liability for errors. Copyright 2005 - 2018 Stamp Community Family - All rights reserved worldwide. Use of any images or content on this website without prior written permission of Stamp Community or the original lender is strictly prohibited.Privacy Policy / Terms of UseAdvertise Here